Lectures should go from being like the family singing around the piano to high-quality concerts.

In terms of doing things I take a fairly scientific approach to why things happen and how they happen. I don't know if there's a god or not, but I think religious principles are quite valid.

Software is inherently complicated. If you say to somebody I want an airline reservation system, to really say what you want in terms of overbooking and fares, and different airlines communicating with each or schedule changes, it's immensely complex. And so you can't write a program that's any simpler than that full specification.

Digital technology has several features that can make it much easier for teachers to pay special attention to all their students.

Software was the key element that would determine how useable and how broadly applicable the machine was.

In a system of capitalism, as people's wealth rises, the financial incentive to serve them rises. As their wealth falls, the financial incentive to serve them falls, until it becomes zero. We have to find a way to make the aspects of capitalism that serve wealthier people serve poorer people as well.

Other paths would include making nuclear fission cheap enough and safe enough that people broadly embrace it, so that could be scaled up.